<div id="header">
	<h1>
		<a href="/"><span class="logo_Nibiru">Nibiru</span><span class="logo_Era">Era</span></a>
		<span class="sub_title"><a href="/manage/center/">Management Center</a></span>
		<span class="logo_btn">
			{% if username %}
				hi, <span class="user_name">{{username}}</span> <span style="margin-left: 10px;">[ <a href="/manage/logout/">Logout</a> ]</span>
			{% else %}
				[ <a href="/manage/login/">Login</a> ]
			{% endif %}
			[ <a href="/manage/center/">Manage</a> ]
		</span>
	</h1>
</div>